UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 3 )*

(Name of Issuer)

(Title of Class of Securities)

(CUSIP Number)

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

August 29, 2012

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), Rule 13d-1(f) or Rule 13d-1(g), check the following box    ¨.

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

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The class of equity securities to which this Statement on Schedule 13D relates is the common stock (the “Common Stock”), of Continental Energy Corp. (the “Issuer”), a British Columbia, Canadian corporation having its principal executive offices at: 1413 S. Howard Avenue, Suite 220, Tampa, Florida, 33606.

This statement on Schedule 13D is being filed by Macquarie Bank Limited (“MBL”), an Australian corporation. MBL is a global provider of banking, financial, advisory, investment and funds management services. MBL has its principal office at 1 Martin Place, Sydney, NSW 2000, Australia.

Macquarie B.H. Pty Limited is the sole voting member of MBL. Macquarie B.H. Pty Limited is directly and wholly-owned by MGL, which is listed on the Australian Securities Exchange (ASX). MGL is a leading provider of banking, financial, advisory, investment and funds management services. MGL has its principal office at Level 7, 1 Martin Place, Sydney, NSW 2000, Australia. MGL’s ownership of MBL is through Macquarie B.H. Pty Ltd, its wholly owned subsidiary which has no other business activities other than the ownership of MBL. As a result, the information provided is only for MGL and MBL.

The directors and executive officers of MGL and MBL are set forth on Schedule I attached hereto. Schedule I sets forth the following information with respect to each such person:

(i) name;

(ii) business address;

(iii) present principal occupation or employment and the name, principal business and address of any corporation or other organization in which such employment is conducted; and

(iv) citizenship.

During the last five years, none of MGL, MBL or any person named in Schedule I, has been (i) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (ii) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

On August 24, 2007, Macquarie Bank Limited (“MBL”) entered into an agreement (the “Agreement”) with the Issuer to acquire 5,000,000 units on August 29 2007, each unit consisting of 1 fully-paid and non-assessable common share (or 5,000,000 “shares”), and two non-transferable share purchase warrants, each warrant entitling the holder to purchase 1 additional

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common share (or 10,000,000 “warrant shares”). The purchase price for the units was US$0.65 per Common Share; the strike price for the warrants was US$0.90 per share. The warrants expire 3 years after the unit was issued, or August 29, 2010. MBL was also issued a further 250,000 shares as a placement fee for the issue of the units. The previously granted 10,000,000 warrants expired at the end of August 2010.

MBL received notice on January 25^th 2011, that by action of the board of directors of the Issuer, the terms of 10,000,000 common share purchase warrants originally issued to Macquarie Bank Limited in August 2007 in consideration of a private placement were amended as follows: the expiry date of the 10,000,000 common share purchase warrants has been extended until 29 August 2012 and the exercise price has been reduced from US$ 0.90 per common share to US$ 0.20 per common share.

The 10,000,000 common share purchase warrants noted above expired on 29 August 2012.

MBL intends to hold the Common Shares solely for investment purposes.

MBL currently has no plans or proposals that relate to or would result in any of the actions enumerated in paragraphs (a) through (j) of Item 4 of this Schedule 13D filing. However, MBL reserves the right to change its plans at any time, as it deems appropriate, in light of its ongoing evaluation of (a) its business and liquidity objectives, (b) the Issuer’s financial condition, business, operations, competitive position, prospects and/or share price, (c) industry, economic and/or securities markets conditions, (d) alternative investment opportunities, and (e) other relevant factors. Without limiting the generality of the preceding sentence, MBL reserves the right (in each case, subject to any applicable restrictions under law or contract) to at any time or from time to time (i) purchase or otherwise acquire additional securities of the Issuer, or instruments convertible into or exercisable for any such securities (collectively, “Issuer Securities”), in the open market, in privately negotiated transactions or otherwise, (ii) sell, transfer or otherwise dispose of Issuer Securities in public or private transactions, (iii) cause Issuer Securities to be distributed in kind to its investors, (iv) encourage (including, without limitation, through communications with directors, management, and existing or prospective security holders, investors or lenders of the Issuer, existing or potential strategic partners, industry analysts and other investment and financing professionals) the Issuer to consider or explore (A) sales or acquisitions of assets or businesses or other extraordinary corporate transactions, such as a takeover bid or scheme of arrangement (including transactions in which MBL and/or its affiliates may be proposed as acquirors), or (B) other changes to the Issuer’s business or structure.

(a), (b) See the information set forth on the cover page hereof.

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Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

Except as set forth in Item 4 above, MBL does not have any contract, arrangement, understanding or relationship (legal or otherwise) with any person with respect to any securities of the Issuer.

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SIGNATURES

After reasonable inquiry and to the best of their knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct.

Date: September 11, 2012

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Schedule I

Macquarie Group Limited

The name and present principal occupation of each of the directors (Board Members) and officers (Executive Committee Members) of Macquarie Group Limited are set forth below. Unless otherwise noted, each of these persons is an Australian citizen and has as his/her business address No. 1 Martin Place, Sydney, New South Wales 2000, Australia.

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Macquarie Bank Limited

The name and present principal occupation of each of the directors (Board Members) and officers (Executive Committee Members) of Macquarie Bank Limited are set forth below. Unless otherwise noted, each of these persons is an Australian citizen and has as his/her business address No. 1 Martin Place, Sydney, New South Wales 2000, Australia.

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